Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c85c2b4cd5d800…

MALICIOUS

PDF

69.6 KB Created: 2020-11-13 15:09:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8abc7481a742b6918ddff703c972dbb4 SHA-1: 22bb08ea181dfe8fc2d9d94edb2c6ab2f77b24b9 SHA-256: c3c85c2b4cd5d8004cff09b1a3c9978edc9ce3a6bf46aacde88c2e47e755c337
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/123?utm_term=voyage+of+the+mimi+ben+affleck PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f89103c7292f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427093/normal_5f9a64ad02292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f87475fa94a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f8720e5e81f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393637/normal_5f8e71cfae836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450734/normal_5fa7b3416b50c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/kizamefuromukakumepibew.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/3d_to_stl_converter_online.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/anime_haven_es.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/49243811388.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B3 5292 bytes
SHA-256: 5fa0c0d7a2591f586038a327d578b81cece1848924507e941e7de24d41adb6af
font_01_sfnt_off0000e4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AD 10840 bytes
SHA-256: ed932dd9f40aeb1c1160853cfa4a7c10e4d5601c225c3cd02fde83e20b273d19

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